Calculate the number of days between two datetimes?

조회 수: 120(최근 30일)
Jussi Ikäheimo
Jussi Ikäheimo 2016년 11월 10일
댓글: Peter Perkins 2016년 11월 18일
How to calculate the number of days between two datetimes?
days(between(day1,day2)) does not work:
"Error using days (line xxx) Input data must be a real, numeric array."

채택된 답변

Brendan Hamm
Brendan Hamm 2016년 11월 10일
You can do:
days(day2-day1)
The issue is that the between function returns a calendarDuration and this is measured using variable time-frames like months and years which contain different numbers of days.

추가 답변(1개)

Peter Perkins
Peter Perkins 2016년 11월 15일
between already calculated the difference between those two dates in days:
>> d1 = datetime('yesterday'); d2 = datetime('tomorrow');
>> between(d1,d2)
ans =
calendarDuration
2d
Even more explicitly:
> between(d1,d2,'days')
ans =
calendarDuration
2d
If you then want the number 2, use caldays:
>> caldays(between(d1,d2,'days'))
ans =
2
Hope this helps.
  댓글 수: 2
Peter Perkins
Peter Perkins 2016년 11월 18일
Jussi, I'm not sure what you're saying. All I wanted to demonstrate was that between gives you back a quantity that already measures the number of days. If you need a numeric value, then caldays is the function you want to apply to that, not days.

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